Screw propelling type filling material cooling device

Abstract

This utility model relates to a spiral propulsion type cooling device for filler material, including a filler pipe, coolers, and a spiral propulsion system. The filler pipe is used to transport filler material. Several coolers are present, with at least two coolers installed on the outer wall of the filler pipe along the filler material transport direction. The temperature of the coolers gradually decreases along the filler material transport direction. The coolers are used to cool the filler material in the filler pipe. The spiral propulsion system is installed in the filler pipe and is used to push the material through the filler pipe for transport. With the above configuration, multiple coolers work together to continuously cool the filler material in the filler pipe while it is being transported, resulting in good cooling effect, high efficiency, simple structure, convenient operation, and low cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of cathode carbon production equipment for aluminum, specifically relating to a spiral propulsion type filler cooling device. Background Technology

[0002] In the calcination process of aluminum cathode carbon blocks, the filler plays a crucial role in fixing the position of the carbon blocks, ensuring uniform heat transfer, and preventing oxidation. After calcination, the high-temperature filler must be extracted from the furnace chamber and temporarily stored in an open area until it cools to room temperature before it can be reused. Currently used cooling methods include natural cooling, water spray cooling, and fan cooling, but these methods have disadvantages such as long cooling times, the need for re-drying, dust generation, and high energy consumption. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a spiral propulsion filling material cooling device, which solves the technical problems of long cooling time and multiple processes in the current filling material cooling methods.

[0004] To solve the above problems, the technical solution of this utility model is: a spiral propulsion type filler cooling device, comprising: Packing pipes are used to transport packing materials; A cooler, comprising several, but at least two, coolers installed on the outer wall of the packing pipe along the packing material conveying direction, wherein the temperature of the cooler gradually decreases along the packing material conveying direction; the cooler is used to cool the packing material in the packing pipe; The screw propulsion system, installed in the packing pipe, is used to push materials through the packing pipe for transport.

[0005] Preferably, the cooler is an annular cooling pipe body, in which a cooling medium is disposed, and the annular cooling pipe body is wrapped around the outer wall of the packing pipe.

[0006] Preferably, the ends of adjacent annular cooling pipes are fixedly connected by flanges.

[0007] Preferably, the material of the annular cooling pipe is 316L stainless steel.

[0008] Preferably, there are two coolers, namely a first cooler and a second cooler, the temperature of the first cooler is 40-60℃ and the temperature of the second cooler is 20-30℃.

[0009] Preferably, a screen with a certain aperture is installed at the feed inlet of the packing pipe.

[0010] Preferably, the screw propulsion system includes a variable diameter screw shaft and a drive motor. The variable diameter screw shaft is coaxially rotatably disposed in the packing pipe, and the drive motor is connected to the variable diameter screw shaft to drive the variable diameter screw shaft to rotate in the packing pipe.

[0011] Preferably, the feed section of the variable diameter screw shaft has a pitch of 100 mm, and the discharge section has a pitch of 50 mm.

[0012] Preferably, the blade surface of the variable diameter spiral shaft has a tungsten carbide wear-resistant layer.

[0013] Preferably, it also includes a temperature control system, the temperature control system comprising: The outlet temperature sensor is installed inside the packing pipe near the outlet. The velocity measuring device is installed on the variable diameter auger shaft; The PLC controller, outlet temperature sensor, and spiral speed sensor are all electrically connected to the PLC controller.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides a cooling device that combines high efficiency, simple operation, and environmental friendliness. Through closed-loop control, it can cool high-temperature filler to near room temperature within one hour, without the filler coming into direct contact with the cooling water, and ensuring that the moisture content does not exceed the standard, thus achieving intelligent, efficient, and environmentally friendly process equipment. Attached Figure Description

[0015] Figure 1 This is a cross-sectional schematic diagram of the device of this utility model.

[0016] Reference numerals: 1. Packing pipe; 11. High-temperature zone; 12. Low-temperature zone; 2. First cooler; 21. First inlet; 22. First outlet; 3. Second cooler; 31. Second inlet; 32. Second outlet; 4. Variable diameter screw shaft; 41. Blade; 42. First screw shaft; 43. Second screw shaft; 5. Outlet thermometer; 6. Flange. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Example: Figure 1 As shown, this embodiment provides a spiral propulsion type filler cooling device, including a filler pipe 1, a cooler, and a spiral propulsion system. The filler pipe 1 is used to transport filler. There are several coolers, at least two of which are installed on the outer wall of the filler pipe 1 along the filler transport direction. The temperature of the coolers gradually decreases along the filler transport direction. The coolers are used to cool the filler in the filler pipe 1. The spiral propulsion system is installed in the filler pipe 1 and is used to push the material in the filler pipe 1 for transport.

[0019] With the above setup, multiple coolers work together to continuously cool the filling material in the filling pipe 1 while it is being transported. This results in good cooling effect, high efficiency, simple structure, convenient operation, and low cost.

[0020] In this embodiment of a spiral propulsion packing cooling device, the cooler is an annular cooling tube containing a cooling medium, and the annular cooling tube covers the outer wall of the packing pipe 1. This increases the contact area between the cooler and the packing pipe 1, resulting in uniform cooling and high cooling efficiency.

[0021] In this embodiment of a spiral propulsion type filler cooling device, the ends of adjacent annular cooling pipes are fixedly connected by flanges 6. The structure is simple, the connection is stable, the cost is low, and maintenance is convenient.

[0022] In this embodiment of a spiral propulsion type filler cooling device, the annular cooling pipe is made of 316L stainless steel.

[0023] In this embodiment of a spiral propulsion filler cooling device, there are two coolers: a first cooler 2 and a second cooler 3. The temperature of the first cooler 2 is 40-60℃, and the temperature of the second cooler 3 is 20-30℃. Preferably, each cooler cools the same length of the filling pipe. By setting multiple temperature zones for continuous cooling, combined with spiral feeding, the heat transfer area is increased, resulting in good cooling effect.

[0024] Optionally, the inclination angle of the packing pipe 1 is controlled within 1 degree. Near the feed end of the packing pipe 1 is a high-temperature zone 11, with a 4-meter-long annular cooling pipe body that carries 60°C circulating warm water sourced from the waste heat recovery system of the roasting furnace. The first inlet 21 of the first cooler 2 is at the lower end, and the first outlet 22 is at the upper end. Near the discharge end of the packing pipe 1 is a low-temperature zone 12, with a 4-meter-long annular cooling pipe body connected to a tap water pipe. The second inlet 31 of the second cooler 3 is at the lower end, and the second outlet 32 ​​is at the upper end. The annular cooling pipe bodies of the high-temperature zone 11 and the low-temperature zone 12 are connected by a flange 6.

[0025] In this embodiment of a spiral propulsion packing cooling device, a 3mm aperture screen is installed at the inlet of the packing pipe 1. This design allows for the filtration of the packing material, removing substandard materials.

[0026] In this embodiment, a spiral propulsion type cooling device for filler material includes a spiral propulsion system comprising a variable-diameter spiral shaft 4 and a drive motor. The variable-diameter spiral shaft 4 is coaxially rotatably disposed in the filler pipe 1, and the drive motor is connected to the variable-diameter spiral shaft 4 to drive the variable-diameter spiral shaft 4 to rotate within the filler pipe 1. The spiral feeding method increases the heat transfer contact area of ​​the filler material, thereby improving cooling efficiency. Optionally, the drive motor is a variable frequency motor.

[0027] In this embodiment of a spiral propulsion type filler cooling device, optionally, the filler pipe 1 is equipped with two spiral shafts with different pitches, forming a variable diameter spiral shaft 4. The feed section of the variable diameter spiral shaft 4 has a pitch of 100mm, and the discharge section has a pitch of 50mm. Specifically, the high-temperature zone 11 is equipped with a first spiral shaft 42 with a pitch of 100mm, and the low-temperature zone 12 has a second spiral shaft 43 with a pitch of 50mm. Each of the two spiral shafts is equipped with a corresponding drive motor. Using different spiral shafts for feeding in different temperature zones facilitates adjustment of the feeding speed according to actual conditions.

[0028] The combination of a large-pitch spiral shaft and a low rotation speed extends the residence time of the filler in the high-temperature zone, ensuring that the core heat of the filler has enough time to be cooled by the cooling medium. The small-pitch spiral shaft enhances the heat exchange process by increasing the agitation frequency of the filler, resulting in higher heat exchange efficiency and enabling rapid cooling.

[0029] Slowly insert the spiral shaft into the packing pipe 1, and adjust its position so that the lengths extending from both ends of the packing pipe 1 are equal. Install bearing seats at both ends of the spiral shaft for fixation. The two spiral shaft sections are joined together by bushings, which fit the shaft diameter, and secured with screws to ensure synchronous rotation of the two spiral shaft sections. The outer side of the spiral shaft in the high-temperature zone packing pipe 1 is connected to the drive motor.

[0030] In this embodiment of a spiral propulsion type filler cooling device, the surface of the blades 41 of the variable diameter spiral shaft 4 is covered with a tungsten carbide wear-resistant layer, which improves service life.

[0031] This embodiment of a spiral propulsion type filler cooling device also includes a temperature control system. The temperature control system includes an outlet temperature sensor 5, a spiral speed sensor, and a PLC controller. The outlet temperature sensor 5 is installed inside the filler pipe 1 near the discharge port. The spiral speed sensor is installed on the variable diameter spiral shaft 4 and can be an encoder, installed at the drive end of the variable diameter spiral shaft 4. The outlet temperature sensor 5 can be a thermocouple, installed 100mm from the discharge port, and records the outlet temperature data every 10 seconds. Both the outlet temperature sensor 5 and the spiral speed sensor are electrically connected to the PLC controller. The PLC controller receives signals from the thermocouple and the encoder, and its output is connected to a variable frequency motor speed control module to control the drive motor of the spiral propulsion system. By real-time monitoring of the filler temperature and timely control of the feeding speed, the efficiency of the process and the normal cooling of the filler are improved.

[0032] Specifically, the installation of the screw speed measuring device is as follows: The encoder is installed at the output end of the screw shaft in the low-temperature zone. The encoder is fixed by a bracket to ensure that the encoder shaft and the screw shaft are coaxial.

[0033] Installation of outlet temperature sensor 5: Install a thermocouple in the reserved hole 100mm away from the outlet on the packing pipe 1 in the low temperature zone. The thermocouple probe extends 50mm into the packing pipe 1 and is fixed with a nut. The wire is connected to the PLC controller.

[0034] The work process is as follows: Before starting the device, set the initial operating parameters: the screw shaft speed in high-temperature zone 11 is 5 rpm, the screw shaft speed in low-temperature zone 12 is 10 rpm, and the target outlet temperature is 50℃. After the filler material is roasted and discharged from the furnace, it is crushed and coarsely screened before entering the dual-temperature zone screw propulsion filler cooling device. The cooling water flow in high-temperature zone 11 and low-temperature zone 12 is continuous. The filler material enters the filler pipe 1 through a 3mm aperture screen at the inlet. When the material screw travels to low-temperature zone 12, the PLC controller starts closed-loop control. If the temperature value is greater than 60℃ for three consecutive times, the PLC controller immediately reduces the speed of low-temperature zone 12 to 8 rpm to prolong the cooling residence time of the filler material; if the temperature value is less than 40℃ for three consecutive times, the PLC controller immediately increases the speed of low-temperature zone 12 to 12 rpm to accelerate the discharge of the filler material.

Claims

1. A spiral propulsion type filler cooling device, characterized in that, include: A stuffing pipe (1) is used to transport stuffing material; A cooler, having several, at least two coolers installed on the outer wall of the packing pipe (1) along the packing material conveying direction, the temperature of the cooler gradually decreases along the packing material conveying direction; the cooler is used to cool the packing material in the packing pipe (1); The screw propulsion system is installed in the packing pipe (1) and is used to push materials to be transported in the packing pipe (1).

2. The spiral propulsion type filler cooling device according to claim 1, characterized in that, The cooler is an annular cooling pipe body, which contains a cooling medium and is wrapped around the outer wall of the packing pipe (1).

3. The spiral propulsion type filler cooling device according to claim 2, characterized in that, The ends of adjacent annular cooling pipes are fixedly connected by flanges (6).

4. The spiral propulsion type filler cooling device according to claim 2, characterized in that, The annular cooling pipe is made of 316L stainless steel.

5. A spiral propulsion type filler cooling device according to claim 1, characterized in that, The cooler has two parts, namely a first cooler (2) and a second cooler (3). The temperature of the first cooler (2) is 40-60℃, and the temperature of the second cooler (3) is 20-30℃.

6. The spiral propulsion type filler cooling device according to claim 1, characterized in that, A screen with a certain aperture is installed at the inlet of the packing pipe (1).

7. A spiral propulsion type filler cooling device according to claim 1, characterized in that, The screw propulsion system includes a variable diameter screw shaft (4) and a drive motor. The variable diameter screw shaft (4) is coaxially rotated in the packing pipe (1). The drive motor is connected to the variable diameter screw shaft (4) to drive the variable diameter screw shaft (4) to rotate in the packing pipe (1).

8. A spiral propulsion type filler cooling device according to claim 7, characterized in that, The feed section pitch of the variable diameter screw shaft (4) is 100mm, and the discharge section pitch is 50mm.

9. A spiral propulsion type filler cooling device according to claim 7, characterized in that, The blades (41) of the variable diameter spiral shaft (4) have a tungsten carbide wear-resistant layer on their surface.

10. A spiral propulsion type filler cooling device according to claim 1, characterized in that, It also includes a temperature control system, which includes: The outlet temperature sensor (5) is installed inside the packing pipe (1) near the outlet. A spiral speed measuring device is installed on the variable diameter spiral shaft (4); The PLC controller, the outlet temperature sensor (5) and the spiral speed sensor are all electrically connected to the PLC controller.

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